two identical spring scales are each attached to a cord that is wrapped around a pulley. the two pulleys have identical mass

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical